<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="app">
      <h1>{{reverseMsg}}</h1>
    </div>
  </body>
</html>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
  const vm = new Vue({
    el: "#app",
    data: {
      msg: "豌豆传媒",
    },
    computed: {
      //   reverseMsg() {
      //     return this.msg.split("").reverse().join("");
      //   //   },
      reverseMsg: {
        get() {
          return 9999 + this.msg;
        },
        set() {
          console.log("123");
        },
      },
    },
  });
</script>
